The sensor has one Image Buffer, and two "character buffers". The sensor performs its feature extraction algorithm on the image to build a "template" in one of the character buffers.Don Jeronimo's software uploads the template data to the computer. I believe he also echoes it to the Serial Monitor.

How to save image directly using the arduino code ,Right now I am using another customized library to save image directly from the module without using the software , but that needs to run a python script to be running to save image .Can i save the image just by using Arduino scketch ? if Yes , How to do it ?--------------------------------------------------------------------------------------------------------------------------------If there is any other method like How to work with the module if I am using USB to connect to my system ?(Vcc , D+ , D- , Gnd ) - how to program the module to send a command to get image and save it in a folder --------------------------------------------------------------------------------------------------------------------------------

The sensor is controlled by commands sent over serial. This is what the adafruit library does. You will have to write a PC app that does the same thing as the Adafruit library. If you write your app in C++, you can use the adafruit code largely unchanged.

When I store one fingerprint using 'enroll' sketch, It gets store with ID#0 (irrespective of which Id I type in serial monitor) and when I try to store another fingerprint the previous fingerprint gets overwritten and new fingerprint is also stored with ID#0. Please help me How can I store multiple fingerprints using enroll sketch?

As I was working with this fingerprint i found something that if we are using Arduino code to extract image byte data I am getting 36865 bytes.But if I am using USBtoSerial convertor to get image byte data directly from Fingerprint module I am getting 40044 bytes where does these extra 3179 bytes comes from ?How do i exclude them ? will these data will be in the front of at last ?